Did any of you watch the premiere of Science Channel's new series "Aliens: The Definitive Guide" with Michio Kaku??

Did any of you watch the premiere of Science Channel's new series "Aliens: The Definitive Guide" with Michio Kaku??

The Milky Way galaxy is so big, that there's no doubt, statistically speaking, that ETs exist.

That's what several prominent scientists say on the month-long series "Are We Alone?," airing on the Science Channel.

But what do these otherworldly denizens look like? Are they smart or dumb? Will we ever come face to face with them?

On the first installment of "Aliens: The Definitive Guide," premiering tonight, famed theoretical physicist Michio Kaku is among those who take a strong stand on the biggest questions about the search for intelligent life in the universe.

"Some scientists say that perhaps we are the only life forms in the universe. Give me a break! I mean, how many stars are there out there in the universe, anyway? The Hubble Space Telescope can see about a hundred billion galaxies -- that's the visible universe," Kaku says on the alien TV special.

"Each galaxy consists of a hundred billion stars. Do the math. A hundred billion times a hundred billion is 10 sextillion. That's one with 22 zeros after it. There definitely are aliens in outer space -- they're out there!"